I'm running Ubuntu 11.10 on Thinkpad X220.
Browsing through ThinkWiki pages I stumbled upon this information:
Configuring an extended desktop over two monitors led to malfunction. Side-by-side worked, one above the other did not.
In natty the solution was just to avoid the layouts that caused the malfunction.
The problems appear to have been completely solved in Ubuntu 11.10 (Oneiric Ocelot).
Has anyone of you managed to make X220 work with dual monitor setup? Does it require UltraBase? Any special tweaks or modifications?
Thanks for help!